Last updated: August 1, 2025
Understanding the UV Index is essential for residents and visitors of Darvi, Mongolia, as it provides crucial information about the sun's ultraviolet radiation levels at different times of the day. With the potential for sunburn and long-term skin health issues, being aware of UV levels can help everyone take necessary precautions, especially during peak exposure times. In the semi-arid BSk climate of Darvi, where the sun shines brightly, the UV index can reach alarming levels, peaking at 9 around midday. By monitoring this index, you can protect your skin and enjoy the outdoors safely!
As the sun rises, the UV Index begins its journey, peaking at 9 between 12:00 PM and 2:00 PM, indicating a strong risk of harm from unprotected sun exposure. Early in the morning, at 7:00 AM, the index starts low at only 1, making it safer for outdoor activities. By 9:00 AM, it increases to a moderate 4, prompting some sun safety precautions. The intensity intensifies, hitting 8 by 11:00 AM and 6 at 10:00 AM, urging those out and about to seek shade. As the afternoon progresses, the UV Index begins to taper off, decreasing to 7 at 3:00 PM, and down to 5 at 4:00 PM, signifying a safer end to the day. By 5:00 PM, it drops to 3, and by sunset at 7:00 PM, it returns to a minimal 1. Stay vigilant and protect your skin during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV changes demonstrate a marked increase in intensity, peaking during the summer months. From January's UV Index of 2 (low exposure) to May and June, where it reaches 10 (very high), there's a significant risk for sunburn. The high-risk months are May through August, during which the UV Index consistently remains at 9 or higher, indicating that exposure can lead to severe skin damage in as little as 15 minutes. To protect themselves, visitors and residents are advised to utilize sunscreen, wear protective clothing, and seek shade during mid-day hours from May to August. As autumn approaches, UV levels decrease, but caution is still recommended in September with a UV Index of 7.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Darhan UVI | 1 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Erdenet UVI | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Ulan Bator UVI | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 6 | 4 | 3 | 1 |
| OElgii UVI | 2 | 3 | 5 | 7 | 10 | 9 | 9 | 9 | 7 | 5 | 2 | 1 |
| Khovd UVI | 2 | 3 | 6 | 7 | 10 | 10 | 9 | 9 | 7 | 5 | 2 | 1 |
| Darvi | 2 | 3 | 5 | 7 | 10 | 10 | 9 | 9 | 7 | 5 | 2 | 2 |